55331307 has 12 divisors (see below), whose sum is σ = 83398224. Its totient is φ = 35283600.

The previous prime is 55331303. The next prime is 55331327. The reversal of 55331307 is 70313355.

It is not a de Polignac number, because 55331307 - 2² = 55331303 is a prime.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55331303) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 133444 + ... + 133857.

It is an arithmetic number, because the mean of its divisors is an integer number (6949852).

Almost surely, 2^55331307 is an apocalyptic number.

55331307 is a deficient number, since it is larger than the sum of its proper divisors (28066917).

55331307 is a wasteful number, since it uses less digits than its factorization.

55331307 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 267330 (or 267327 counting only the distinct ones).

The product of its (nonzero) digits is 4725, while the sum is 27.

The square root of 55331307 is about 7438.5016636417. The cubic root of 55331307 is about 381.0573208237.

The spelling of 55331307 in words is "fifty-five million, three hundred thirty-one thousand, three hundred seven".